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No. 455,343; Patented July 7, 1891.

UNITED STATES through the slot of a conduit WVALTER H. KNIGHT,

ELECTRIC-RA PATENT OFFICE.

OF NEW YORK, N. Y.

ILWAY PLOW.

SPECIFICATION forming part of Letters Patent No. 455,843, dated July '7,1891.

Application filed March 5, 1889 To aZZ whom it may concern:

. Be it known that I, WALTER H. KNIGHT, a citizen of the United States,residing at New York, in the county of New York, State of New York, haveinvented certain new and useful Improvements in Electric Railway Plows,of which the following is a specification.

My invention relates to electric railways; and it consists in a methodof supporting the contact device which is adapted to extend into aslotted conduit and make connection with a line conductor therein, whichextends along the roadway.

My invention is illustrated in the accompa- .nying drawings, in which-Figure 1 is a side elevation of my contact device. Fig. 2 is a sectionof Fig.1 on the line 2 2. Fig. 3 is a side elevation of a modified formof my device. Fig. at is an end ele-, vation of the device shown in Fig.3. Fig. 5 is a side elevation of another form embodying similarprinciples. Fig. 6 shows the last plow whenthrown out ofthe conduit.Figs. 7 and 8 are respectively longitudinal and transverse sections ofthe upper plow-joint. Fig.

9 is a section of plow-handle showing springcatch, and Fig. 10 is atransverse section of the lower plow-joint.

The device consists in general of a protected insulated conductor whichextends and usually called a plow. This plow, which is sub stantiallysuch as is shown in my patent, No. 338,175, of March 16, 1886, issupported from the vehicle, first, by aframe or movable part, which isadapted to swing or slide transversely relatively to the vehicle, andfrom which the plow issuspended by a swivel moving about a verticalaxis.

In Fig. 1, A and B are respectively two.

plows consisting of an insulated conductingshank 0, having a springcontact-shoe D on its lower end and extending upward into aninsulating-panel E, carried by a frame F. Each of these plows is looselyhooked into a W-shaped frame G, so as to turn freely about,

a vertical axis. The frame G is bent up in the middle, so that it maypass over the axle on the vehicle, and its upper ends are pivoted bybolts H, which attach it to a fixed I part of the vehicle. The frame isthus able Serial No. 301,858. (No model.)

to swing freely about a horizontal axis 1 2, passing through the boltsH. By this arrangement a transverse or side movement is given to thesupports of frame G, from which the plow is carried by a verticalswiveling joint. t

In Figs. 3 and 4 the transversely-swinging frame G is replaced by asliding traveler K, movable on a guide L. In this case the frame F hasat its upper end a turn-table S, from which passes a king-bolt M,projecting from a correspondingpart T on traveler K. This makes a firmswivelingjoint between K and the plow, while the necessary transversemovement is gained by the sliding of the traveler on the guide L. Inthis form of plow the joint permitting a swiveling motion about avertical axis is a firm joint, holding the plow in a substantiallyvertical position. Substantially the same arrangement is shown in Figs.5 and 6, where the frame G is suspended from such a point that theangular movement of the plow as the frame swings from'side to side isinappreciablaand the firm swivel action is attained by a loosenesstached to the frame.- In thisform the upper end of the plow is forked,and a bolt a is loosely put through the two forks and a slotted hole I)in the frame, as shown in Figs. 7 and 8. ment with substantially noangular movement of the plow relatively to the frame.

The two plows are joined at their center by by attachment to the lowerend of a lever P, pivoted firmly to frame G. The upper end of the leverP is held by a spring-catch connection R with frame G, as is shown inFig. 9 and in my patent, No. 338,174. This spring-catch is adapted togive way when anobstruction is encountered, as shown in Fig. 6.

What I claim as new, and desire to secure by Letters Patent, is

l. The combination, with an electricallypropelled vehicle and a lineconductor, of a transversely-moving support and a contact device pivotedthereto on a vertical axis and extending to connect with thesupply-conductor.

of an electrically-propelled vehicle,a supply- This permits a sufiicientswivel movein the upper joint by which the plow is atlinks 0, one oneach side, and these are held 2. The combination, in an electricrailway,

conductor inclosed in a slotted conduit, and

an intermediate contact device extending into the conduit and connectedby a joint having a vertical axis with a transversely-moving 5 piececonnected to the vehicle. Witnesses:

3. The combination, in an electrically-pro- FRANK SNYDER,

pelled vehicle, of a transverse horizontal BUSHROD MORSE.

guide, a traveler movable thereon, and a contact device connected Withsaid traveler by a joint having a vertical axis.

\VALTER H. KNIGHT.

